Coulter, in her syndicated column, argued that McDaniel is really hurting himself by refusing to concede that Cochran won the runoff. McDaniel and his supporters have argued since the runoff that Cochran only won by getting African Americans and Democrats to vote for him, many of whom committed voter fraud in the process.

"When did Ann Coulter become a RINO?" Cochran campaign spokesman Jordan Russell said to TPM in an email.

"I was being sarcastic," Russell added, "because she calls Senator Cochran a good Republican and rips McDaniel. I thought her analysis was sound."

Meanwhile, in response to a request for comment about the column, McDaniel's campaign released a statement from the state senator reiterating that Cochran and his supporters used "despicable tactics of racial division and class warfare" to win the election. Here's the statement:

Despite the efforts of some in the Republican establishment to cast the people's effort in Mississippi as being about a win or a loss, the truth is conservative Republicans here and across America are demanding a full accounting of the race-baiting tactics and an investigation into the allegations of criminal misconduct in Mississippi, with the goal being to return integrity to the Republican party.

Conservatives across America have the unique opportunity to stand and be heard, and in so doing they can fill the void of leadership that has watched idly as Republican leaders in Mississippi employed the despicable tactics of racial division and class warfare for the sole purpose of holding onto power.